Is it time to go?

I am a GNA going on my 3rd yr of nursing school and I have been employed at a retirement home for the past 6 years. When I started at this place I thought I had died and gone to heaven. The place was so beautiful, so clean and the gna/resident ratio was 1 to 8, which is a little compared to other places I worked. I actually had time to complete my job. I gave all my showers, nail care, even had time to clean out their closets during down time. Now this place is totally different. I changed my work schedule to just weekends to accomodate my school schedule and I dread coming to work. I have 10 ppl at the least on evening shift and anywhere from 19 to 23 on night shift. I can only do the bare minimum. Most of the time when I go home I always feel like I forgot to do something because I have so much to do during the course of the shift. The team work that once was here no longer exists. Everytime I can request a weekend off i do. Another thing that really bothers me about my job is that most of the residents have alzheimers or dementia and so many of my coworkers have been fired because of something one of the residents said they did or said. They dont even want to hear what the staff has to say. They just fire them and escort them off the premises like they are common criminals. I dont know if I am just tired of my GNA role and am anxious to move on to a different scope of practice or my time at this job has run its course. I just dont like they way I feel when its time to come to work because I didnt always feel this way....Tell me what u think?